Safety gas-burner



(No Model.) 2 Sheets-Sheet 1. W. 85 L. W. GATES.

SAFETY GAS BURNER.

No. 569,868. Patented 0012.20, 1896.

' (No Model.) j 2 Sheets-Sheet 2.

W. 85' L. W. GATES. $AFBTY GAS BURNER ]."a.te11ted Oct. 20, 1896.

0'. WASHINGTON. n. a

UNITED STATES PATENT Orrin-a.

IVILLIAM GA ES, OF \VOODBRIDGE, AND LOUIS \VILLIAM GATES, OF VEST HAVEN, CONNECTICUT, ASSIGNORS OF ONE-THIRD TO GEORGE H. SMITH, OF NEW HAVEN, CONNECTICUT.

SAFETY GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 569,868, dated October 20, 1896. Application filed March 18, 1896. Serial No. 583,692. (No model.)

To all whom it may concern: therefrom into the path of movement of the Be it known that we, \VILLIAM GATES, of arm G of the valve, to which it is preferably \Voodbridge, and LOUIS IVILLIAM GATES, of connected. From the face of this lever, and lVestHaveinin the county of New Haven and just below its pivot, projects a finger g.

State of Connecticut, have invented a new Mounted in the shell and having a bearing 55 Safety GasBurner; and we do hereby declare in the seat I) at one end and against the upthe following, when taken in connection with per end of the shell at the other end is a leverthe accompanyingdrawings and the letters of spring I, which normally stands bowed toreference marked thereon, to be a full, clear, ward the valve side of the case, as shown in IQ and exact description of the same, and which Fig. 2, and to this spring the finger g is pref- 60 said drawings constitute part of this specifierably connected. Also mounted in the shell cation, and represent, in and seated in the bearing a at one end and Figure 1, a side view of our improved against the upper end of the shell at the other burner; Fig. 2, a sectional view of the same end is a releasing-spring J, which is formed in the closed position; Fig. 3, asectional view with a clearance-opening h for the finger g, 6 5 in the open position and before the shell is exwhich extends through it, the said spring I panded; Fig. 4:, a similar view with the shell and releasing device J being placed under expanded; Fig. 5, a modified form of tempotension by the screws 0 cl. Also mounted in V rary releasing device; Fig. 6, a plan view of the case and above the point where the valvethe lever-spring; Fig. '7, a plan view of one lever II is pivoted is a plunger K, adapted to 70 form of releasing device; Fig. 8, a plan view he forced into the shell against the releasing of a modified form of releasing device. device J by an L-shaped lever L, mounted in This invention relates to an improvement a bearing L on one side of the shell. in gas-burners, the object being the combi- In the closed position, as shown in Fig. 2,

nation, with a burner, of a valve which may the spring I is bowed toward the valve side 75 be operated to cut off the supply of gas in of the shell, and, bearing against the end of case the flame be accidentally extinguished; the finger g, forces the valve-lever H outand the invention consists in utilizing the exward and the valve E to its seat, and so as pansion of the shell of the burner to operate to out off the flow of gas. When it is desired 3c the springs and levers to open the valve, and to light the gas, the plunger K is forced in- 80 as more fully hereinafter described, and parward by the lever L, which may be operated ticularly recited in the claims. by the finger or by cords depending from a The burner consists of a shell A, partially ring j in the end thereof, which movement closed at its upper end to receive an ordinary forces the releasing-spring J inward, which lava tip B and closed at its lower end by a in turn bears against the lever-spring, also 85 screw-plug C. Oifsetting from the lower end forcing that inward to the position shown in ofthe shell is an internally-threaded arm D Fig. 3, which movement of the spring draws for adjustment to ordinary fixtures. In the the valve-lever II outward and hence opens upper end of the plug C are two verticallythe valve. This position of the releasing and movable seats a b, which may be adjusted by lever springs will be maintained by the con- 90 screws ad, which project beyond the lower tracted condition of the shell. The flow of end of the plug C. In the inlet-passage D, gas is thus admitted and may be ignited at which extends through the offsetting-arm D the tip B. Preferably the upper end of the into the chamber, a valve-seat e is formed to shell will curve upward on opposite sides of receive a valve E, which is formed at one end the burner, as shown in Fig. 1, which causes 5 with a stern F, whereby it is horizontally it to soon become heated, and when the shell guided, and at its opposite end with an arm is so heated it expands, and consequently G, projecting into the shell A. Pivoted to a releases the tension of the releasing device lug f, whichisseeured to theinside of the shell, and lever-spring, which return to a nearly is avalve-lever II, which depends downward vertical position, as shown in Fig. 4, and zoo which position still allows a free How of gas through the shell. I

Should the flame become extinguished, the shell will gradually cool and hence contract, again placing the releasing device and leverspring under tension, which causes them to return to the closed position, as shown in Fig. 2, thereby returning the valve E to its seat and cutting off the How of gas. In order to insure the positive return of the leverspring to its closed position, a portion of one side will be cut away to reduce its central portion, and so that when tension is applied it will naturally spring in the desired direc tion. Instead of arranging the releasing device vertically in the shell, as before described, it may be arranged at the lower end and consist of a loop M, pivoted to the shell opposite the valve, through which loop the lever-spring will extend into a seat a, which is vertically adjustable by a screw 0, as before described. Extending through the plug 0, and parallel with the screw 0, is a springpin N, the upper end of which stands beneath the outer edge of the loop M. When the lever-spring I is bowed to bear against the valve-lever H,'the valve E is in the closed position. To open the valve, the pin N is raised, which forces the loop M over the lower end of the valve-lever H, which draws it toward the levenspring I and opens the valve E. As the shell becomes'heated and expands the tension of the spring I is reduced, which permits the loop M to drop downward to its normal position and releases the lever H, but, as stated, the power of the spring I being relieved, it will not act to close the valve. WVhen, however, the shell contracts, the spring I will again come under tension and force the valve-lever H outward and close the valve.

It will thus be seen that the burner acts antomatically to cut off the supply of gas when the flame becomes extinguished without turning off the supply. Hence the danger of escaping gas is entirely avoided.

We are aware that valves operated by the expansion and contraction of the shells have been employed, and do not, therefore, wish to be understood as claiming, broadly, such as our invention; but

XVhat we do claim is 1. In a gas-burner the combination with a metallic shell and inlet-port thereof, a valve seated in said inlet, a valve-lever mounted in said shell-and extending into the path of movement of said valve, a lever-spring mounted in the shell between its ends adapted to be placed under endwise tension by the contraction thereof, and adapted when under pressure to close said valve and means for temporarily moving the said valve-lever to open the valve, substantially as described.

2. In a gas-burner the combination with a shell and inlet-port thereof, a valve seated in said port, a valve-lever mounted within the shell and extending into the path of movement of the valve, a lever-spring mounted between the ends of the shell and adapted to be normally held under tension by the contraction thereof,a releasing device also mounted in the shell and means for moving said releasing device to operate said spring, substantially as described.

3. In a gas-burner the combination with a shell and inlet-port thereof of a valve-seated in said port and formed with a stem projecting'into said shell, a valve-lever pivoted in said shell and extending into engagement with said valve, a lever-spring mounted between the ends of the shell, a releasing de vice also mounted between the ends of the shell and means for adjusting the tension of the said lever-spring and releasing device and a plunger extending through one side of the shell, whereby said releasingdevice may be forced inward, substantially as described.

4. In a gas-burner, the combination with a shell, of a valve, and a valve-spring located within the said shell, adapted to be placed under endwise tension by the contraction thereof, and coacling with the valve to open and close the same, substantially as described.

5. In a gas-burner, the combination with a shell, of a valve, a valve lever connected with the valve, and a valve-spring located within the shell, adapted to be placed under endwise tension by the contraction thereof, and coacting with the lever to operate the valve, substantially as described.

In testimony whereof we have'signed this specification in the presence of two subscribing witnesses.

\VILLIAM GATES. LOUIS WILLIAM GATES.

\Vitnesses:

FRED. O. EARLE, JEssIE S. ALLING. 

